please Send us the MVM-SRV700-Install-MSI.log file.
I've run into this issue every time i tried to install EPO and/or add ons via installer(exe/msi). I remediated it by
(1) running the command fsutil disable8dot3 0
(2) installing EPO at the root of a drive, for example install at D:\epo as opposed to d:\program files\EPO
[There is some issue with install paths with spaces]